flightsim X ran fine on my system up to 1600x1200 with a 2.6ghz X2 939, 2gb ddrr500 3-4-4-8, 7900GT 500/1500, and a 74gb raptor on xp home. Im not too into that sort of game but my brother who is taking pilot classes enjoys it, so when he was looking to upgrade his box he wanted to play the game smooth on his 1680x1050 22", I tried it on my box above and found it smooth as glass with high settings at 1280x1024, 1600x1200/1680x1050 were smooth with some settings reduced, and 1920x1200 was just to much for my set up. Dropping the detail down to med made things better but thats always the sacrifice. Oddly enough I didnt notice that much cpu usage, while playing I rarely say 100%. Memory usage was big though, 1.24-1.5gb is to be expected at higher resolutions. The game seems to be limited by graphics power mainly. My brothers box uses a 7950GT clocked similar to my 7900GT, only with double the memory and it does make a difference for the smoothness. Not that he can play higher settings than I can, but you dont get as many jerks. A 320mb 8800GTS would be recommendation for higher res flight sim X if your looking for a good experience on a higher resolution.
Im also a supreme commander player and I gotta say that the game does indeed seem to run better on quad cores, which is partly what made me look twice at that price chart. I play the game at 1920x1200 and it is quite smooth. 1V1 or 2v2 is perfect and no amount of units or combination of units would make a difference to that, but bots seem to do the damage to my system. Playing a 3v1 (3 bots vs me) on a medium sized map is good, but large troop movements shoot my x2 up to 60%+ in no time, zooming in close just topples it. Same goes for a rather large defensive points, as from what I can gather the game provides its own "physics" and dynamics to every vehicle, unit, and building so the bullets fired will vary in damage and ratio of hit:miss depending on their orientation to the object they are attacking.
But if you want to try a 8 man game on a large map its just brutal, 2 hour games means big groups, large defensive points, lots of structures, and the fact that the map itself is so detailed is just brutal. Its playable, but you best start eliminating your opponents quickly to avoid a pretty little slide show. Benchmarks I have seen thus far show quad cores are the way to go for supreme commander players. A beefy gpu is a must as well. Most games you can get by with a midrange cpu and a high end vid card, but thats going to become a different story soon enough.
If quad cores fall into a more mainstream segment (250-350) then we will all certainly be in for another treat. Multi threaded games and applications are fast becoming the norm with dual core adoption being so well received, its not unrealistic to expect big changes over the next year.
On another note about price drops, anybody else notice the x2 3600 is down to only $85 and free shipping on newegg?